C4/Record.pm

   1 package C4::Record;
   2 #
   3 # Copyright 2006 (C) LibLime
   4 # Parts copyright 2010 BibLibre
   5 #
   6 # This file is part of Koha.
   7 #
   8 # Koha is free software; you can redistribute it and/or modify it under the
   9 # terms of the GNU General Public License as published by the Free Software
  10 # Foundation; either version 2 of the License, or (at your option) any later
  11 # version.
  12 #
  13 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  14 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  15 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License along
  18 # with Koha; if not, write to the Free Software Foundation, Inc.,
  19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20 #
  21 #
  22 use strict;
  23 #use warnings; FIXME - Bug 2505
  24
  25 # please specify in which methods a given module is used
  26 use MARC::Record; # marc2marcxml, marcxml2marc, changeEncoding
  27 use MARC::File::XML; # marc2marcxml, marcxml2marc, changeEncoding
  28 use MARC::Crosswalk::DublinCore; # marc2dcxml
  29 use Biblio::EndnoteStyle;
  30 use Unicode::Normalize; # _entity_encode
  31 use XML::LibXSLT;
  32 use XML::LibXML;
  33 use C4::Biblio; #marc2bibtex
  34 use C4::Csv; #marc2csv
  35 use C4::Koha; #marc2csv
  36 use YAML; #marcrecords2csv
  37 use Text::CSV::Encoded; #marc2csv
  38
  39 use vars qw($VERSION @ISA @EXPORT);
  40
  41 # set the version for version checking
  42 $VERSION = 3.00;
  43
  44 @ISA = qw(Exporter);
  45
  46 # only export API methods
  47
  48 @EXPORT = qw(
  49   &marc2endnote
  50   &marc2marc
  51   &marc2marcxml
  52   &marcxml2marc
  53   &marc2dcxml
  54   &marc2modsxml
  55   &marc2bibtex
  56   &marc2csv
  57   &changeEncoding
  58 );
  59
  60 =head1 NAME
  61
  62 C4::Record - MARC, MARCXML, DC, MODS, XML, etc. Record Management Functions and API
  63
  64 =head1 SYNOPSIS
  65
  66 New in Koha 3.x. This module handles all record-related management functions.
  67
  68 =head1 API (EXPORTED FUNCTIONS)
  69
  70 =head2 marc2marc - Convert from one flavour of ISO-2709 to another
  71
  72   my ($error,$newmarc) = marc2marc($marc,$to_flavour,$from_flavour,$encoding);
  73
  74 Returns an ISO-2709 scalar
  75
  76 =cut
  77
  78 sub marc2marc {
  79         my ($marc,$to_flavour,$from_flavour,$encoding) = @_;
  80         my $error;
  81     if ($to_flavour =~ m/marcstd/) {
  82         my $marc_record_obj;
  83         if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
  84             $marc_record_obj = $marc;
  85         } else { # it's not a MARC::Record object, make it one
  86             eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
  87
  88 # conversion to MARC::Record object failed, populate $error
  89                 if ($@) { $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR };
  90         }
  91         unless ($error) {
  92             my @privatefields;
  93             foreach my $field ($marc_record_obj->fields()) {
  94                 if ($field->tag() =~ m/9/ && ($field->tag() != '490' || C4::Context->preference("marcflavour") eq 'UNIMARC')) {
  95                     push @privatefields, $field;
  96                 } elsif (! ($field->is_control_field())) {
  97                     $field->delete_subfield(code => '9') if ($field->subfield('9'));
  98                 }
  99             }
 100             $marc_record_obj->delete_field($_) for @privatefields;
 101             $marc = $marc_record_obj->as_usmarc();
 102         }
 103     } else {
 104         $error = "Feature not yet implemented\n";
 105     }
 106         return ($error,$marc);
 107 }
 108
 109 =head2 marc2marcxml - Convert from ISO-2709 to MARCXML
 110
 111   my ($error,$marcxml) = marc2marcxml($marc,$encoding,$flavour);
 112
 113 Returns a MARCXML scalar
 114
 115 C<$marc> - an ISO-2709 scalar or MARC::Record object
 116
 117 C<$encoding> - UTF-8 or MARC-8 [UTF-8]
 118
 119 C<$flavour> - MARC21 or UNIMARC
 120
 121 C<$dont_entity_encode> - a flag that instructs marc2marcxml not to entity encode the xml before returning (optional)
 122
 123 =cut
 124
 125 sub marc2marcxml {
 126         my ($marc,$encoding,$flavour,$dont_entity_encode) = @_;
 127         my $error; # the error string
 128         my $marcxml; # the final MARCXML scalar
 129
 130         # test if it's already a MARC::Record object, if not, make it one
 131         my $marc_record_obj;
 132         if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
 133                 $marc_record_obj = $marc;
 134         } else { # it's not a MARC::Record object, make it one
 135                 eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
 136
 137                 # conversion to MARC::Record object failed, populate $error
 138                 if ($@) { $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR };
 139         }
 140         # only proceed if no errors so far
 141         unless ($error) {
 142
 143                 # check the record for warnings
 144                 my @warnings = $marc_record_obj->warnings();
 145                 if (@warnings) {
 146                         warn "\nWarnings encountered while processing ISO-2709 record with title \"".$marc_record_obj->title()."\":\n";
 147                         foreach my $warn (@warnings) { warn "\t".$warn };
 148                 }
 149                 unless($encoding) {$encoding = "UTF-8"}; # set default encoding
 150                 unless($flavour) {$flavour = C4::Context->preference("marcflavour")}; # set default MARC flavour
 151
 152                 # attempt to convert the record to MARCXML
 153                 eval { $marcxml = $marc_record_obj->as_xml_record($flavour) }; #handle exceptions
 154
 155                 # record creation failed, populate $error
 156                 if ($@) {
 157                         $error .= "Creation of MARCXML failed:".$MARC::File::ERROR;
 158                         $error .= "Additional information:\n";
 159                         my @warnings = $@->warnings();
 160                         foreach my $warn (@warnings) { $error.=$warn."\n" };
 161
 162                 # record creation was successful
 163         } else {
 164
 165                         # check the record for warning flags again (warnings() will be cleared already if there was an error, see above block
 166                         @warnings = $marc_record_obj->warnings();
 167                         if (@warnings) {
 168                                 warn "\nWarnings encountered while processing ISO-2709 record with title \"".$marc_record_obj->title()."\":\n";
 169                                 foreach my $warn (@warnings) { warn "\t".$warn };
 170                         }
 171                 }
 172
 173                 # only proceed if no errors so far
 174                 unless ($error) {
 175
 176                         # entity encode the XML unless instructed not to
 177                 unless ($dont_entity_encode) {
 178                         my ($marcxml_entity_encoded) = _entity_encode($marcxml);
 179                         $marcxml = $marcxml_entity_encoded;
 180                 }
 181                 }
 182         }
 183         # return result to calling program
 184         return ($error,$marcxml);
 185 }
 186
 187 =head2 marcxml2marc - Convert from MARCXML to ISO-2709
 188
 189   my ($error,$marc) = marcxml2marc($marcxml,$encoding,$flavour);
 190
 191 Returns an ISO-2709 scalar
 192
 193 C<$marcxml> - a MARCXML record
 194
 195 C<$encoding> - UTF-8 or MARC-8 [UTF-8]
 196
 197 C<$flavour> - MARC21 or UNIMARC
 198
 199 =cut
 200
 201 sub marcxml2marc {
 202     my ($marcxml,$encoding,$flavour) = @_;
 203         my $error; # the error string
 204         my $marc; # the final ISO-2709 scalar
 205         unless($encoding) {$encoding = "UTF-8"}; # set the default encoding
 206         unless($flavour) {$flavour = C4::Context->preference("marcflavour")}; # set the default MARC flavour
 207
 208         # attempt to do the conversion
 209         eval { $marc = MARC::Record->new_from_xml($marcxml,$encoding,$flavour) }; # handle exceptions
 210
 211         # record creation failed, populate $error
 212         if ($@) {$error .="\nCreation of MARCXML Record failed: ".$@;
 213                 $error.=$MARC::File::ERROR if ($MARC::File::ERROR);
 214                 };
 215         # return result to calling program
 216         return ($error,$marc);
 217 }
 218
 219 =head2 marc2dcxml - Convert from ISO-2709 to Dublin Core
 220
 221   my ($error,$dcxml) = marc2dcxml($marc,$qualified);
 222
 223 Returns a DublinCore::Record object, will eventually return a Dublin Core scalar
 224
 225 FIXME: should return actual XML, not just an object
 226
 227 C<$marc> - an ISO-2709 scalar or MARC::Record object
 228
 229 C<$qualified> - specify whether qualified Dublin Core should be used in the input or output [0]
 230
 231 =cut
 232
 233 sub marc2dcxml {
 234         my ($marc,$qualified) = @_;
 235         my $error;
 236     # test if it's already a MARC::Record object, if not, make it one
 237     my $marc_record_obj;
 238     if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
 239         $marc_record_obj = $marc;
 240     } else { # it's not a MARC::Record object, make it one
 241                 eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
 242
 243                 # conversion to MARC::Record object failed, populate $error
 244                 if ($@) {
 245                         $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR;
 246                 }
 247         }
 248         my $crosswalk = MARC::Crosswalk::DublinCore->new;
 249         if ($qualified) {
 250                 $crosswalk = MARC::Crosswalk::DublinCore->new( qualified => 1 );
 251         }
 252         my $dcxml = $crosswalk->as_dublincore($marc_record_obj);
 253         my $dcxmlfinal = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
 254         $dcxmlfinal .= "<metadata
 255   xmlns=\"http://example.org/myapp/\"
 256   xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
 257   xsi:schemaLocation=\"http://example.org/myapp/ http://example.org/myapp/schema.xsd\"
 258   xmlns:dc=\"http://purl.org/dc/elements/1.1/\"
 259   xmlns:dcterms=\"http://purl.org/dc/terms/\">";
 260
 261         foreach my $element ( $dcxml->elements() ) {
 262                 $dcxmlfinal.="<"."dc:".$element->name().">".$element->content()."</"."dc:".$element->name().">\n";
 263     }
 264         $dcxmlfinal .= "\n</metadata>";
 265         return ($error,$dcxmlfinal);
 266 }
 267
 268 =head2 marc2modsxml - Convert from ISO-2709 to MODS
 269
 270   my ($error,$modsxml) = marc2modsxml($marc);
 271
 272 Returns a MODS scalar
 273
 274 =cut
 275
 276 sub marc2modsxml {
 277         my ($marc) = @_;
 278         # grab the XML, run it through our stylesheet, push it out to the browser
 279         my $xmlrecord = marc2marcxml($marc);
 280         my $xslfile = C4::Context->config('intrahtdocs')."/prog/en/xslt/MARC21slim2MODS3-1.xsl";
 281         my $parser = XML::LibXML->new();
 282         my $xslt = XML::LibXSLT->new();
 283         my $source = $parser->parse_string($xmlrecord);
 284         my $style_doc = $parser->parse_file($xslfile);
 285         my $stylesheet = $xslt->parse_stylesheet($style_doc);
 286         my $results = $stylesheet->transform($source);
 287         my $newxmlrecord = $stylesheet->output_string($results);
 288         return ($newxmlrecord);
 289 }
 290
 291 sub marc2endnote {
 292     my ($marc) = @_;
 293         my $marc_rec_obj =  MARC::Record->new_from_usmarc($marc);
 294     my ( $abstract, $f260a, $f710a );
 295     my $f260 = $marc_rec_obj->field('260');
 296     if ($f260) {
 297         $f260a = $f260->subfield('a') if $f260;
 298     }
 299     my $f710 = $marc_rec_obj->field('710');
 300     if ($f710) {
 301         $f710a = $f710->subfield('a');
 302     }
 303     my $f500 = $marc_rec_obj->field('500');
 304     if ($f500) {
 305         $abstract = $f500->subfield('a');
 306     }
 307         my $fields = {
 308                 DB => C4::Context->preference("LibraryName"),
 309                 Title => $marc_rec_obj->title(),
 310                 Author => $marc_rec_obj->author(),
 311                 Publisher => $f710a,
 312                 City => $f260a,
 313                 Year => $marc_rec_obj->publication_date,
 314                 Abstract => $abstract,
 315         };
 316         my $endnote;
 317         my $style = new Biblio::EndnoteStyle();
 318         my $template;
 319         $template.= "DB - DB\n" if C4::Context->preference("LibraryName");
 320         $template.="T1 - Title\n" if $marc_rec_obj->title();
 321         $template.="A1 - Author\n" if $marc_rec_obj->author();
 322         $template.="PB - Publisher\n" if  $f710a;
 323         $template.="CY - City\n" if $f260a;
 324         $template.="Y1 - Year\n" if $marc_rec_obj->publication_date;
 325         $template.="AB - Abstract\n" if $abstract;
 326         my ($text, $errmsg) = $style->format($template, $fields);
 327         return ($text);
 328
 329 }
 330
 331 =head2 marc2csv - Convert several records from UNIMARC to CSV
 332
 333   my ($csv) = marc2csv($biblios, $csvprofileid);
 334
 335 Pre and postprocessing can be done through a YAML file
 336
 337 Returns a CSV scalar
 338
 339 C<$biblio> - a list of biblionumbers
 340
 341 C<$csvprofileid> - the id of the CSV profile to use for the export (see export_format.export_format_id and the GetCsvProfiles function in C4::Csv)
 342
 343 =cut
 344
 345 sub marc2csv {
 346     my ($biblios, $id) = @_;
 347     my $output;
 348     my $csv = Text::CSV::Encoded->new();
 349
 350     # Getting yaml file
 351     my $configfile = "../tools/csv-profiles/$id.yaml";
 352     my ($preprocess, $postprocess, $fieldprocessing);
 353     if (-e $configfile){
 354         ($preprocess,$postprocess, $fieldprocessing) = YAML::LoadFile($configfile);
 355     }
 356
 357     # Preprocessing
 358     eval $preprocess if ($preprocess);
 359
 360     my $firstpass = 1;
 361     foreach my $biblio (@$biblios) {
 362         $output .= marcrecord2csv($biblio, $id, $firstpass, $csv, $fieldprocessing) ;
 363         $firstpass = 0;
 364     }
 365
 366     # Postprocessing
 367     eval $postprocess if ($postprocess);
 368
 369     return $output;
 370 }
 371
 372 =head2 marcrecord2csv - Convert a single record from UNIMARC to CSV
 373
 374   my ($csv) = marcrecord2csv($biblio, $csvprofileid, $header);
 375
 376 Returns a CSV scalar
 377
 378 C<$biblio> - a biblionumber
 379
 380 C<$csvprofileid> - the id of the CSV profile to use for the export (see export_format.export_format_id and the GetCsvProfiles function in C4::Csv)
 381
 382 C<$header> - true if the headers are to be printed (typically at first pass)
 383
 384 C<$csv> - an already initialised Text::CSV object
 385
 386 =cut
 387
 388
 389 sub marcrecord2csv {
 390     my ($biblio, $id, $header, $csv, $fieldprocessing) = @_;
 391     my $output;
 392
 393     # Getting the record
 394     my $record = GetMarcBiblio($biblio, 1);
 395     next unless $record;
 396     # Getting the framework
 397     my $frameworkcode = GetFrameworkCode($biblio);
 398
 399     # Getting information about the csv profile
 400     my $profile = GetCsvProfile($id);
 401
 402     # Getting output encoding
 403     my $encoding          = $profile->{encoding} || 'utf8';
 404     # Getting separators
 405     my $csvseparator      = $profile->{csv_separator}      || ',';
 406     my $fieldseparator    = $profile->{field_separator}    || '#';
 407     my $subfieldseparator = $profile->{subfield_separator} || '|';
 408
 409     # TODO: Be more generic (in case we have to handle other protected chars or more separators)
 410     if ($csvseparator eq '\t') { $csvseparator = "\t" }
 411     if ($fieldseparator eq '\t') { $fieldseparator = "\t" }
 412     if ($subfieldseparator eq '\t') { $subfieldseparator = "\t" }
 413     if ($csvseparator eq '\n') { $csvseparator = "\n" }
 414     if ($fieldseparator eq '\n') { $fieldseparator = "\n" }
 415     if ($subfieldseparator eq '\n') { $subfieldseparator = "\n" }
 416
 417     $csv = $csv->encoding_out($encoding) ;
 418     $csv->sep_char($csvseparator);
 419
 420     # Getting the marcfields
 421     my $marcfieldslist = $profile->{marcfields};
 422
 423     # Getting the marcfields as an array
 424     my @marcfieldsarray = split('\|', $marcfieldslist);
 425
 426    # Separating the marcfields from the user-supplied headers
 427     my @marcfields;
 428     foreach (@marcfieldsarray) {
 429         my @result = split('=', $_);
 430         if (scalar(@result) == 2) {
 431            push @marcfields, { header => $result[0], field => $result[1] };
 432         } else {
 433            push @marcfields, { field => $result[0] }
 434         }
 435     }
 436
 437     # If we have to insert the headers
 438     if ($header) {
 439         my @marcfieldsheaders;
 440         my $dbh   = C4::Context->dbh;
 441
 442         # For each field or subfield
 443         foreach (@marcfields) {
 444
 445             my $field = $_->{field};
 446         # Remove any blank char that might have unintentionally insered into the tag name
 447         $field =~ s/\s+//g;
 448
 449             # If we have a user-supplied header, we use it
 450             if (exists $_->{header}) {
 451                     push @marcfieldsheaders, $_->{header};
 452             } else {
 453                 # If not, we get the matching tag name from koha
 454                 if (index($field, '$') > 0) {
 455                     my ($fieldtag, $subfieldtag) = split('\$', $field);
 456                     my $query = "SELECT liblibrarian FROM marc_subfield_structure WHERE tagfield=? AND tagsubfield=?";
 457                     my $sth = $dbh->prepare($query);
 458                     $sth->execute($fieldtag, $subfieldtag);
 459                     my @results = $sth->fetchrow_array();
 460                     push @marcfieldsheaders, $results[0];
 461                 } else {
 462                     my $query = "SELECT liblibrarian FROM marc_tag_structure WHERE tagfield=?";
 463                     my $sth = $dbh->prepare($query);
 464                     $sth->execute($field);
 465                     my @results = $sth->fetchrow_array();
 466                     push @marcfieldsheaders, $results[0];
 467                 }
 468             }
 469         }
 470         $csv->combine(@marcfieldsheaders);
 471         $output = $csv->string() . "\n";
 472     }
 473
 474     # For each marcfield to export
 475     my @fieldstab;
 476     foreach (@marcfields) {
 477         my $marcfield = $_->{field};
 478         # If it is a subfield
 479         if (index($marcfield, '$') > 0) {
 480             my ($fieldtag, $subfieldtag) = split('\$', $marcfield);
 481             my @fields = $record->field($fieldtag);
 482             my @tmpfields;
 483
 484             # For each field
 485             foreach my $field (@fields) {
 486
 487                 # We take every matching subfield
 488                 my @subfields = $field->subfield($subfieldtag);
 489                 foreach my $subfield (@subfields) {
 490
 491                     # Getting authorised value
 492                     my $authvalues = GetKohaAuthorisedValuesFromField($fieldtag, $subfieldtag, $frameworkcode, undef);
 493                     push @tmpfields, (defined $authvalues->{$subfield}) ? $authvalues->{$subfield} : $subfield;
 494                 }
 495             }
 496             push (@fieldstab, join($subfieldseparator, @tmpfields));
 497         # Or a field
 498         } else {
 499             my @fields = ($record->field($marcfield));
 500             my $authvalues = GetKohaAuthorisedValuesFromField($marcfield, undef, $frameworkcode, undef);
 501
 502             my @valuesarray;
 503             foreach (@fields) {
 504                 my $value;
 505
 506                 # Getting authorised value
 507                 $value = defined $authvalues->{$_->as_string} ? $authvalues->{$_->as_string} : $_->as_string;
 508
 509                 # Field processing
 510                 eval $fieldprocessing if ($fieldprocessing);
 511
 512                 push @valuesarray, $value;
 513             }
 514             push (@fieldstab, join($fieldseparator, @valuesarray));
 515          }
 516     };
 517
 518     $csv->combine(@fieldstab);
 519     $output .= $csv->string() . "\n";
 520
 521     return $output;
 522
 523 }
 524
 525
 526 =head2 changeEncoding - Change the encoding of a record
 527
 528   my ($error, $newrecord) = changeEncoding($record,$format,$flavour,$to_encoding,$from_encoding);
 529
 530 Changes the encoding of a record
 531
 532 C<$record> - the record itself can be in ISO-2709, a MARC::Record object, or MARCXML for now (required)
 533
 534 C<$format> - MARC or MARCXML (required)
 535
 536 C<$flavour> - MARC21 or UNIMARC, if MARC21, it will change the leader (optional) [defaults to Koha system preference]
 537
 538 C<$to_encoding> - the encoding you want the record to end up in (optional) [UTF-8]
 539
 540 C<$from_encoding> - the encoding the record is currently in (optional, it will probably be able to tell unless there's a problem with the record)
 541
 542 FIXME: the from_encoding doesn't work yet
 543
 544 FIXME: better handling for UNIMARC, it should allow management of 100 field
 545
 546 FIXME: shouldn't have to convert to and from xml/marc just to change encoding someone needs to re-write MARC::Record's 'encoding' method to actually alter the encoding rather than just changing the leader
 547
 548 =cut
 549
 550 sub changeEncoding {
 551         my ($record,$format,$flavour,$to_encoding,$from_encoding) = @_;
 552         my $newrecord;
 553         my $error;
 554         unless($flavour) {$flavour = C4::Context->preference("marcflavour")};
 555         unless($to_encoding) {$to_encoding = "UTF-8"};
 556
 557         # ISO-2709 Record (MARC21 or UNIMARC)
 558         if (lc($format) =~ /^marc$/o) {
 559                 # if we're converting encoding of an ISO2709 file, we need to roundtrip through XML
 560                 #       because MARC::Record doesn't directly provide us with an encoding method
 561                 #       It's definitely less than idea and should be fixed eventually - kados
 562                 my $marcxml; # temporary storage of MARCXML scalar
 563                 ($error,$marcxml) = marc2marcxml($record,$to_encoding,$flavour);
 564                 unless ($error) {
 565                         ($error,$newrecord) = marcxml2marc($marcxml,$to_encoding,$flavour);
 566                 }
 567
 568         # MARCXML Record
 569         } elsif (lc($format) =~ /^marcxml$/o) { # MARCXML Record
 570                 my $marc;
 571                 ($error,$marc) = marcxml2marc($record,$to_encoding,$flavour);
 572                 unless ($error) {
 573                         ($error,$newrecord) = marc2marcxml($record,$to_encoding,$flavour);
 574                 }
 575         } else {
 576                 $error.="Unsupported record format:".$format;
 577         }
 578         return ($error,$newrecord);
 579 }
 580
 581 =head2 marc2bibtex - Convert from MARC21 and UNIMARC to BibTex
 582
 583   my ($bibtex) = marc2bibtex($record, $id);
 584
 585 Returns a BibTex scalar
 586
 587 C<$record> - a MARC::Record object
 588
 589 C<$id> - an id for the BibTex record (might be the biblionumber)
 590
 591 =cut
 592
 593
 594 sub marc2bibtex {
 595     my ($record, $id) = @_;
 596     my $tex;
 597
 598     # Authors
 599     my $marcauthors = GetMarcAuthors($record,C4::Context->preference("marcflavour"));
 600     my $author;
 601     for my $authors ( map { map { @$_ } values %$_  } @$marcauthors  ) {
 602         $author .= " and " if ($author && $$authors{value});
 603         $author .= $$authors{value} if ($$authors{value});
 604     }
 605
 606     # Defining the conversion hash according to the marcflavour
 607     my %bh;
 608     if (C4::Context->preference("marcflavour") eq "UNIMARC") {
 609
 610         # FIXME, TODO : handle repeatable fields
 611         # TODO : handle more types of documents
 612
 613         # Unimarc to bibtex hash
 614         %bh = (
 615
 616             # Mandatory
 617             author    => $author,
 618             title     => $record->subfield("200", "a") || "",
 619             editor    => $record->subfield("210", "g") || "",
 620             publisher => $record->subfield("210", "c") || "",
 621             year      => $record->subfield("210", "d") || $record->subfield("210", "h") || "",
 622
 623             # Optional
 624             volume  =>  $record->subfield("200", "v") || "",
 625             series  =>  $record->subfield("225", "a") || "",
 626             address =>  $record->subfield("210", "a") || "",
 627             edition =>  $record->subfield("205", "a") || "",
 628             note    =>  $record->subfield("300", "a") || "",
 629             url     =>  $record->subfield("856", "u") || ""
 630         );
 631     } else {
 632
 633         # Marc21 to bibtex hash
 634         %bh = (
 635
 636             # Mandatory
 637             author    => $author,
 638             title     => $record->subfield("245", "a") || "",
 639             editor    => $record->subfield("260", "f") || "",
 640             publisher => $record->subfield("260", "b") || "",
 641             year      => $record->subfield("260", "c") || $record->subfield("260", "g") || "",
 642
 643             # Optional
 644             # unimarc to marc21 specification says not to convert 200$v to marc21
 645             series  =>  $record->subfield("490", "a") || "",
 646             address =>  $record->subfield("260", "a") || "",
 647             edition =>  $record->subfield("250", "a") || "",
 648             note    =>  $record->subfield("500", "a") || "",
 649             url     =>  $record->subfield("856", "u") || ""
 650         );
 651     }
 652
 653     $tex .= "\@book{";
 654     $tex .= join(",\n", $id, map { $bh{$_} ? qq(\t$_ = "$bh{$_}") : () } keys %bh);
 655     $tex .= "\n}\n";
 656
 657     return $tex;
 658 }
 659
 660
 661 =head1 INTERNAL FUNCTIONS
 662
 663 =head2 _entity_encode - Entity-encode an array of strings
 664
 665   my ($entity_encoded_string) = _entity_encode($string);
 666
 667 or
 668
 669   my (@entity_encoded_strings) = _entity_encode(@strings);
 670
 671 Entity-encode an array of strings
 672
 673 =cut
 674
 675 sub _entity_encode {
 676         my @strings = @_;
 677         my @strings_entity_encoded;
 678         foreach my $string (@strings) {
 679                 my $nfc_string = NFC($string);
 680                 $nfc_string =~ s/([\x{0080}-\x{fffd}])/sprintf('&#x%X;',ord($1))/sgoe;
 681                 push @strings_entity_encoded, $nfc_string;
 682         }
 683         return @strings_entity_encoded;
 684 }
 685
 686 END { }       # module clean-up code here (global destructor)
 687 1;
 688 __END__
 689
 690 =head1 AUTHOR
 691
 692 Joshua Ferraro <jmf@liblime.com>
 693
 694 =head1 MODIFICATIONS
 695
 696
 697 =cut